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One of those men underwent hours of surgery to have his arm re-attached after the rollover crash.

Chief John Alter said he can't stand by and watch his guys take the blame for something he says they didn't do. One of their own was critically hurt in this accident but there is another black cloud hanging over this station.

Volunteer firefighter. Lt. Ryan Emmons, 30, continues to recover after his arm was severed early Wednesday morning during an accident involving his fire engine and a tractor trailer.

Instead of complete relief, Alter said there is great angst.

Late Wednesday afternoon, Prince George's County Police released their preliminary findings on the accident which had the Beltway closed for hours, saying the fire engine was just leaving an accident call when it tried to make a U-turn at an emergency vehicle access point.

Police say the engine collided with a tractor trailer, which sources say had the right of way. The two trucks slid into the median and hit a Jeep SUV. In all, seven people were hurt, including four firefighters.

Three of those firefighters have been released from an area hospital, County Fire Chief Marc Bashoor said.

"We just believe that they were attempting to make a U-turn on 495," says Lt. William Alexander, a PGPD spokesperson.

"Were they making a U-turn?" asks Alter. "No ma'am, they were not. They were slowing down for a call."

Alter says his four firefighters were driving on the inner loop of the Beltway and just as they arrived at an accident call, which was on the opposite side, dispatch told them they weren't needed.

Alter says his guys who had slowed down were about to continue forward on the inner loop and head home when he said the driver looked behind him and noticed a tractor trailer bearing down on him. He says the driver pushed on the gas to speed up.